Home / 853,322,603.09-1,279,985,551.26-328,938,643.85

Finding the Fourth Proportional to 853,322,603.09, 1,279,985,551.26 and 328,938,643.85

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Solution

The fourth proportional to 853,322,603.09, 1,279,985,551.26 and 328,938,643.85 is: 493,408,600.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,322,603.09 : 1,279,985,551.26 = 328,938,643.85 : x
  2. Step 2: Convert to fraction form
    853,322,603.09/1,279,985,551.26 = 328,938,643.85/x
  3. Step 3: Cross multiply
    853,322,603.09x = 1,279,985,551.26 × 328,938,643.85
  4. Step 4: Simplify right side
    853,322,603.09x = 421,036,711,372,659,136
  5. Step 5: Solve for x
    x = 421,036,711,372,659,136/853,322,603.09
  6. Step 6: Final answer
    x = 493,408,600.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.